From the FAQ's
Can I be ex-directory with 118 800?
You can become ex-directory by texting the letter ‘E’ to 118800 from the mobile phone you want to be made ex-directory or you can call us on 0800 138 6263. Standard network charges apply. The first time 118 800 contacts you you will be sent an SMS reminding you about how to become ex-directory. Please allow up to 4 weeks for your ex-directory request to take effect.
I really dont like giving any numbers out to anyone and ALWAYS read the wording of those tick boxes at the bottom of the form, usually something like this:
I accept the terms and conditions - Tick Box
I would like you to would like you to bombard me with endless shite offers : yes / no (yes is default)
I would like you to sell my details to other companies peddling any old shite, if you agree to this tick the relevant box -
Yes - I dont want you to pass my details on
No - I do want you to sell my details for profit
Scum sucking marketing scumbag mothers!